| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 1 |
1.4%
|
|
| 3 | 1 |
1.4%
|
|
| 4 | 8 |
11.1%
|
|
| 5 | 11 |
15.3%
|
|
| 6 | 5 |
6.9%
|
|
| 7 | 10 |
13.9%
|
|
| 8 | 19 |
26.4%
|
|
| 9 | 13 |
18.1%
|
|
| 10 | Very effective | 4 |
5.6%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 90 |